The only PC games I might play would be video poker ones. Note, they can usually be bought fairly cheap for around 10 dollars. However, I doubt if they simulate real video poker - cause if they did then casinos would lose thousands to people trained on their home computer.
Anyway, what is your favorite PC casino game? I haven't tried other ones, but I bet they are fun, with the exception of slots. Slots don't seem to have a strategy. What is the strategy?